A lightweight hardware device used to read e-books.

plural of e-mail address

Alternative spelling of BEF

plural of P/E ratio

(music) a minor key with the notes E♭, F, G♭, A♭, B♭, C♭, D♭

(music) an instrument that produces the concert pitch of E♭ when a C is written in the music

plural of E♭ instrument

Alternative form of PE ratio

plural of P-E ratio

A heterogeneous group of immune disorders, characterized by recurrent "cold" staphylococcal infections, unusual eczema-like skin rashes, severe lung infections that result in pneumatoceles, and very high concentrations of the serum antibody IgE.